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Renting a granny flat to students

From Modular Living Australia — the independent knowledge base Last updated: 1 Nov 2026

Renting a backyard dwelling to one tenant on an ordinary lease is covered in can you rent out a granny flat. This page covers a different situation: renting rooms — in the main house, the granny flat or both — to several students at once. Past a certain number of paying residents, state law treats the property as a boarding house (New South Wales) or a rooming house (Victoria), and new obligations apply whether or not the owner thinks of it as a business.^[1][2]

New South Wales: the five-resident line §

Under the Boarding Houses Act 2012, a general boarding house is one that provides beds for a fee to five or more residents. The proprietor, the manager and members of their families are not counted.^[1] A lower threshold applies where two or more paying residents have additional needs: that is an assisted boarding house.^[1]

A registrable boarding house goes on a public register kept by NSW Fair Trading, and councils have inspection powers.^[1] A proprietor who is required to register and does not may be fined by the local council.^[4]

For a household renting to students, the practical points are:

• The family is not counted. Five paying students plus the owner's family is over the line; four paying students is not.^[1]
• The count is of paying residents provided with beds, not of rooms.^[1]
• A boarder is not a tenant. Boarders' rights come from a written occupancy agreement and the occupancy principles under the Boarding Houses Act; tenants are covered by the Residential Tenancies Act 2010 instead. The distinction turns largely on whether the occupant has exclusive use and control of the premises or shares communal areas.^[4]

Whether a principal home and a secondary dwelling on the same lot are counted together as one set of "premises" is not settled by the sources compiled here. If the total across both buildings would reach five, ask NSW Fair Trading before taking the fifth resident.

Victoria: the four-person line §

Victoria uses a lower number. A rooming house is a building where one or more rooms are available for occupancy by four or more people in return for rent.^[2] Rooming houses must be kept to minimum standards.^[5]

Two separate obligations follow:

1. An operator licence. The person or company running the rooming house must be licensed before starting to operate, under the Rooming House Operators Act 2016.^[3][2]
2. Council registration. Licensing does not replace the separate requirement to register the premises with the local council under the Public Health and Wellbeing Act 2008. The two can be done in either order.^[3]

Consumer Affairs Victoria asks anyone unsure whether they are operating a rooming house to contact it.^[2]

International students have the same renting rights §

In Victoria, international students have the same renting rights as local residents.^[6] Whatever arrangement is used — lease, rooming house agreement or informal room rental — it does not lose its legal protections because the occupant holds a student visa.

The building itself may need to change §

Planning and tenancy law are not the only layers. The National Construction Code classifies buildings by use, and a dwelling used to accommodate unrelated people can move from an ordinary house (Class 1a) into Class 1b — a small boarding house or hostel of up to 12 people and 300 m² — with additional smoke alarm requirements and, in some cases, disability access features.^[7] Larger arrangements move into Class 3, which is designed under a different volume of the code.

That matters most if you are buying a factory-built granny flat with student rental in mind: the classification needs to be settled before the design is fixed, because fire separation and alarm layouts are built in at the factory. See building classes for shared housing.

Before you take the next student §

1. Count paying residents across the whole property, excluding your own family.
2. In NSW, check whether you are at or near five; in Victoria, whether four or more people can occupy rented rooms.
3. Decide whether each occupant is a tenant or a boarder, and use the matching written agreement.
4. Ask your building certifier or surveyor whether the use changes the building's NCC class.
5. Check your council's planning rules separately — see granny flat rules by state.

What is not covered here §

Queensland, Western Australia, South Australia, Tasmania, the ACT and the Northern Territory are not covered by the sources compiled here, and their thresholds should not be assumed to match either NSW or Victoria.

This page does not state registration or licence fees, deadlines or penalty amounts, which change and are published by the regulators. It does not cover land tax or income tax consequences of operating a boarding house, the Victorian minimum standards in detail, homestay arrangements organised through education providers, or student accommodation provided by universities.

Nothing here is legal advice. Whether a particular property is a boarding house or rooming house depends on its facts, and NSW Fair Trading and Consumer Affairs Victoria are the bodies to ask.

References §